Tapcensus

Selenium violations in Utah

10 active public water systems in Utah had a Selenium violation in the past three years. What Selenium is and why it matters.

Health effects: Chronic exposure above the MCL causes selenosis — characterized by hair and nail loss, peripheral neuropathy, fatigue, and gastrointestinal disturbance. Liver damage can occur with prolonged high intake. The margin between nutritional requirement and toxic dose is narrow, making the MCL an important threshold.

Systems with a Selenium violation

Unresolved first, then largest first
SystemServesStatusRules violated, 3 yrUnresolved
Roosevelt City Water System
Duchesne County 		8,000 6 0
Cedar Valley Water Conservancy
Iron County 		3,995 6 0
Moroni City
Sanpete County 		1,600 7 0
Charleston Wcd
Wasatch County 		484 8 0
Wallsburg Town Water System
Wasatch County 		440 6 0
Oak Haven Water Company
Wasatch County 		388 6 1
American Pacific
Iron County 		150 3 0
Harmony Heights Water Company
Washington County 		120 7 0
North Valley Ranches Sub
Washington County 		78 10 3
Zion Red Rock
Washington County 		61 4 0
About this data

A system is counted once if any of its violations in the past three years involved Selenium, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Selenium alone.

Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Utah records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.